Double-screen display system based on polarizing beam-splitting

Abstract

The invention relates to the field of AR-HUD (Head Up Display) technologies and particularly discloses a double-screen display system based on polarizing beam-splitting (PBS). The system comprises a first projection module, a second projection module, an imaging system and an extinction mechanism, wherein the imaging system comprises a PBS sheet, a penetrating diffusion plate and a surface reflector; and the first projection module, the penetrating diffusion plate, the PBS sheet and the extinction mechanism are sequentially placed from top to bottom, the second projection module is placed at the right side of the PBS sheet, and the surface reflector is placed at the left side of the PBS sheet. Through the system, far-screen road condition information, near-screen instrument information, multimedia information and the like can be displayed simultaneously, so that the safety and convenience of driving are higher, and the requirement for intelligent driving is better met; a second image of the double-screen display system is a P polarized light image, and therefore a driver can see the image clearly even if he / she wears a pair of polarized sunglasses; and since the PBS sheet and the penetrating diffusion plate are added into the imaging system, an optical path is compacter, and the size of an AR-HUD is reduced.

Description

technical field [0001] The present invention relates to the technical field of AR-HUD, in particular to a dual-screen display system based on polarization splitting. Background technique [0002] The full name of HUD is Head Up Display, which is head-up display, which was first used in military aircraft. In the 1980s, HUD began to be applied to cars, so that drivers do not need to shift their eyes to the dashboard or central control during driving. It enables the driver to pay attention to various indicators of the car while ensuring normal driving, improving the safety and convenience of driving. The information projected by the HUD is mainly the driving status indicators of the car, such as the vehicle speed, fuel level and other information displayed on the dashboard; further, the designers hope to achieve the goal of intelligent driving through the HUD and give it more functions, including navigation, Text messages, phone calls, emails, etc., and even simple interactio...

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a dual-screen display system based on polarization splitting, which solves the technical problems of: the traditional HUD has a short projection distance, takes up a large volume, cannot see the projection when the driver wears polarized sunglasses, and cannot realize the dual-screen display of far and near

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